Top-of-the-line sonar technologies provide the best possible view of the environment beneath your boat.High Definition System (HDS) Gen3 combines a bright, multi-touch display and enhanced processor with high-tech fishfinder capabilities. It works with CHIRP Sonar, Broadband Sounder, StructureScanHD, DownScan Imaging and Trackback view. It comes with advanced navigation, an internal GPS and dual microSD-card slots. It's designed with an uncomplicated user interface, touch-plus-keypad operation and built-in wireless connectivity for your convenience.Both CHIRP and Scanning Sonar: Its got both CHIRP and Scanning Sonar built in, so you get the clearest view of fish, structure and the underwater environment. CHIRP provides more definition and better target separation than traditional sonar, and Scanning Sonar provides a wide angle of detailed imagery from around your boat so your views aren't limited to down. Enhanced sonar sensitivity, excellent target separation and superior noise rejection make seeing baitfish and gamefish targets easier.Included Cartography:This device comes with Nautic Insight Pro Cartography, which contains updated NOAA Electronic Navigational Charts and Marine Protected Areas. With widespread coverage and highly accurate contours, these bathymetric maps will help you safely navigate to any of the 200,000+ Fishing Hot Spots and Points-of-Interest included. Nautic Insight Pro provides map coverage for coasts along the lower 48 states, Alaska, Hawaii and the Caribbean.Key FeaturesSimple To Use:Improved Lowrance interface with touchscreen or keypad option provides lightning-fast, fingertip access to all HDS features. This device boasts intuitive user-interface features like scrolling menus, cursor assist, snap-to setting markers and innovative preview panes with quick-touch slider bars.HD CHIRP Sonar and StructureScan:The power of today's leading fishfinder technologies combined to provide the best possible view both below and to the side of your boat.Cohesive Connectivity:It's built to wirelessly connect with the Lowrance GoFree App and other onboard devices. You can even view and control select HDS Gen3 displays wirelessly using supported tablets and smartphones.Plug-and-Play